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  • Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 omega in series with a combination of two resistors (4 omega each) in parallel and a voltmeter across the parallel combination.

Draw a circuit diagram of an electric circuit containing a cell, a key, an ammeter, a resistor of 2 Ω in series with a combination of two resistors (4 Ω each) in parallel and a voltmeter across the parallel combination. Will the potential difference across the 2 Ω resistor be the same as that across the parallel combination of 4Ω resistors? Give reason. 

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Yes, the potential across the 2\Omega and the parallel combination of two 4\Omega resistors is the same. As the combination of two parallel 4\Omega resistor turns out to be 2\Omega and the potential across two same resistors in series combination comes to be the same.

 

Note: In series combination, the voltage gets divided according to the value of the resistor but the current remains the same but in parallel combination, the voltage remains constant but the current varies according to the voltage value.

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